When i visit my 000webhost site lpu-online-store.000webhostapp.com it redirects me to https://lpu-online-bookstore.xyz
anyone why
In WordPress, make sure to go into the Tools section and edit your site url. 
its not a wordpress site site 
You must have accidentally added this redirect via the 000webhost control panel, as it was put into your .htaccess file. I have removed it and your site should now work fine.
sir still redirected here https://lpu-online-bookstore.xyz/ when i click
lpu-online-store.000webhostapp.com
Please clear your cache and try again. 